Niall Horan fans, we have good news and bad news. The good news first: The One Direction hottie's short-lived romance with fellow singer Ellie Goulding is definitely dunzo. Ready for the bad news?

Niall is believed to have "secretly reunited" with former flame Zoe Whelan. His relationship with the Irish model was first revealed last April, but the couple reportedly split in July because of the pressures of 1D's crazy schedule.

Now that things have calmed down a bit One Direction wise, the pair's relationship is allegedly heating back up -- not that the now-20-year-old singer wants the whole world to know about it! "Niall wants everything kept completely under the radar as he feels they simply won't survive if they're being watched," a source reveals. "But the truth is, he's mad about her and when he's in Ireland they're spending almost every second together."

Looks like the spotlight's back on you, Harry!